ask your doctor if including advair could help improve your lung function. [ male announcer ] advair diskus fluticasone propionate and salmeterol inhalation powder. get your first prescription free and save on refills at advaircopd.com. >> shepard: your tax-free internet shopping might soon cop to an en. the u.s. senate moving forward today with a bill that would allow states to require that online retailers, like amazon and ebay correct state sales tax on everybody you buy. under the law right now a state can collect tax from an online company only if it has a physical presence in that state. supporters of what they are calling the marketplace fairness act say that gives online retailers an unfair edge over bring and mortar shops which are required to tax all their customers. they say the bill would send the tax money to cash hungry states where online buyers live while leveling the playing field for all businesses. critics say it's another government tax grab. james rosen from washington tonight. has the white house weighed in on this. >> yes, shep. a spokesman for president obama